APA (7th ed.) Citation

True, W. P. (1950). The Smithsonian : America's treasure house / by W.P. True: America's treasure house. Sheridan House.

Chicago Style (17th ed.) Citation

True, W. P. The Smithsonian : America's Treasure House / by W.P. True: America's Treasure House. Sheridan House, 1950.

MLA (9th ed.) Citation

True, W. P. The Smithsonian : America's Treasure House / by W.P. True: America's Treasure House. Sheridan House, 1950.

Warning: These citations may not always be 100% accurate.